Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-07-17
Phys.Rev. D57 (1998) 6862-6870
Physics
High Energy Physics
High Energy Physics - Phenomenology
Some typographical errors have been corrected, including two small misprints in table 1 and table 2 and one in Eq.15. 20 pages
Scientific paper
10.1103/PhysRevD.57.6862
The QCD corrections to the moments of the invariant mass distribution in the semileptonic $\tau$ decays are considered. The effect of the renormalization scheme dependence on the fitted values of alpha_s(m^2_tau) and the condensates is discussed, using a simplified approach where the nonperturbative contributions are approximated by the dimension six condensates. The fits in the vector and the axial-vector channel are investigated in the next-to-leading and the next-to-next-to-leading order. The next-to-next-to-leading order results are found to be relatively stable with respect to change of the renormalization scheme. A change from the MS-bar scheme to the minimal sensitivity scheme results in the reduction of the extracted value of alpha_s(m^2_tau) by 0.01.
No associations
LandOfFree
Renormalization scheme dependence and the problem of determination of alpha_s and the condensates from the semileptonic tau decays does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Renormalization scheme dependence and the problem of determination of alpha_s and the condensates from the semileptonic tau decays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Renormalization scheme dependence and the problem of determination of alpha_s and the condensates from the semileptonic tau decays will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-265858